Compare · ModelsLive · 2 picked · head to head
Grok 4.3 vs o3 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 Pro wins on 2/3 benchmarks
o3 Pro wins 2 of 3 shared benchmarks. Leads in coding.
Category leads
general·Grok 4.3coding·o3 Pro
Hype vs Reality
Attention vs performance
Grok 4.3
#76 by perf·#16 by attention
o3 Pro
#45 by perf·no signal
Best value
Grok 4.3
24.4x better value than o3 Pro
Grok 4.3
29.9 pts/$
$1.88/M
o3 Pro
1.2 pts/$
$50.00/M
Vendor risk
Who is behind the model
xAI
$250.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
3 benchmarks · 2 models
Grok 4.3o3 Pro
Dtbench
Grok 4.3 leads by +6.2
Grok 4.3
84.5
o3 Pro
78.2
Lmca
o3 Pro leads by +0.2
Grok 4.3
45.1
o3 Pro
45.3
WeirdML
o3 Pro leads by +8.3
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Grok 4.3
49.9
o3 Pro
58.2
Full benchmark table
| Benchmark | Grok 4.3 | o3 Pro |
|---|---|---|
Dtbench | 84.5 | 78.2 |
Lmca | 45.1 | 45.3 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 49.9 | 58.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens